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(No Model.) 2 Sheets-Sheet 1. 0. G.. ROSS.

HOISTI'NG vMAQHINE.

mvamrom ATTORNEYS l I l b l I l l I I I Patented July 1, 1884 o w J NPETERS. Pholo-Lilllognpller, WaShmglnn. Dv c,

(No Model.) 2 Sheets-Sheet 2.

0. G. ROSS.

HOISTING MAoHiNE. I No. 301,281. Patented July 1, 1884.

WITNESSES: 1 HWENTOR:

BY 1w ATTORNEYS.

35 more clearly.

' llriirnio fs 'r'a'rns Parana? @rrr'cri.

ooRNnLE e. ROSS, on RUTLAND, VERMONT, assrenon TO THE LINCOLN IRONwonKs, or SAME PLAOF.

elm-me- SPECIFICATION forming part of Letters Patent No. 301,281, datedJuly 1, 1884.

Application filed May 21, 1884. (No model.)

To all whom it 11mg concern.-

Be it known that I, OORNELE G. Ross, of Rutland, in the county ofRutland and State of Vermont, have invented certain new and usefulImprovements in Hoisting Machinery,

of which the following is a full, clear, and eX- act description.

This invention relates to hoisting-machines in which a drum withsuitable driving; mechm anism and a disconnecting-clutch are employedfor winding up the rope of a derrick and unwinding or overhauling therope, as the quarryanen say, in the handling of heavy stones and otherobjects in quarries, mines, and the I 5 like'places; and the inventionconsists of contrivauces for unwinding or overhauling the rope morerapidly than it can be done as these machines are commonly arranged, toeconomize time when working in deep mines,

quarries, and other places requiring the use hereinafter fullydescribed.

Reference is to be had to the accompanying drawings,for1ning part ofthis specification, in which similar letters of reference indicatecorresponding parts in all the figures.

Figure 1 is a side elevation of the hoistingmachine with the improvedoverhauling apparatus applied to it. Fig. 2 is a plan View of the same.Fig. 3 is a detail inside elevation on an enlarged scale to show theapparatus Fig. 4 is a plan View of the apparatus of Fig. 3 inverted, andFigs. 5 and 6 represent modifications of the apparatus in sideelevation.

The hoisting-machine consists, as now in use,

0 of the rope-winding drum a, mounted on the shaft I), which is gearedby the wheel a and pinion cl with the shaft 0, which is geared bydifferential wheels f g and pinions h t and the clutch j with the shaft7;, which has a friction .5 wheel, Z, working between thefriction-driver m on the driving-shaft n and the friction-post o, theshaft carrying said wheel [having its bearing in the eccentric p, bywhich the wheel Z is readily shifted from driver m to the middieposition or to the :Irictioupost, according as the drum is to be turnedby the driver on to raise the load, or be held fast to suspend the loadby the friction-post, or to let'the load descend, or to allow the ropeto be overhauled, said eccentric having a shifting-lever, q,.with astop-latch, s, and a holding-rack, t, arranged. for shifting and settingit, as described. The shaft 12 is geared with the driving-engine in anyapproved way, and the pinions h and t are fitted loosely,to be put ingear by the clutch, according as the fast or slow speed is required forlight or heavy loads.

These machines are constructed very heavy and strong for lifting greatweights, and work with so much friction that the overhauling orunwinding of the rope for lowering the tackle to take a new loadrequiresthe gearing to be turned backward by the shaft k when the wheel 1 is setin the middle position, for which said shaft is commonly fitted witharms, like a Windlass, to be worked by hand, which is a very slowprocess, consuming too much time when working in quarries of much depth,and which construction it is now proposed to improve by the employmentof a reversing friction-wheel, a, between the wheel Z and the driver at,or a multiplying-wheel, t, on the shaft a, to utilize the driving-powerfor overhauling the rope. This reversing-wheel a may be arranged to bethrust between said wheels Z and m, as represented in Figs. 5 and 6; butfor the purpose of more rapid action it is preferred to fit said wheel aon acounter-shaft, w, having a wheel, :0, gearing with a larger wheel,1;, on shaft a, for multiplying the speed, said shaft to being mountedin eccentric bearings q to which a foot'lever or hand-lever, z, is connected suitably for shifting its wheels a and :0 into and out of gearwith the wheels Z and 0, when required.

Any other approved means of shifting the reversing-wheel may be used, asa lever swinging on a fulcrumpivot and carrying the shaft of said pulleya in one end; and the same lever arrangement or eccentric bearings 1 maybe employed with suitable levers or supporting-arms, a, for workingthem, when it is preferred to dispense with the wheel 2; and arrange thereversing-wheel to work between wheels I and m, in which case saidreversing wheel may be arranged under the drivingwheels, to be thrustupward between them as in Fig. 5; or it may be arranged above them toproduce the requisite friction by its weight and the weight of its arms,the supportingarms a being fitted to pivot-studs b of the eccentricbearings 3 Having thus described my invention, I claim as new and desireto secure by Letters Patent- 1. The combination of the reversing-wheel uand an eccentric shiftingbox, 3 with the driving-wheels Z and m of thehoisting-machine,

substantially as described.

2. The combination of the reversing-wheel a, wheel as, multiplying-wheelv, eccentric shift- I 5 ing-boxes y, and lever z with thedrivingwheels 1. and m of the hoisting-machine, substantially asdescribed.

OORNELE G. ROSS. Witnesses:

PATRICK KELLY,

NATHANIEL S. STEARNS.

